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Reviewed:  https://review.openstack.org/427141
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=e5320e764625bfc5b6723c52ec202ebdb926d32f
Submitter: Jenkins
Branch:    master

commit e5320e764625bfc5b6723c52ec202ebdb926d32f
Author: Jakub Libosvar <libosvar@xxxxxxxxxx>
Date:   Tue Jan 31 07:32:21 2017 -0500

    functional: Check for processes only if there are any
    
    In one of tests, pstree received SIGSEGV signal and was terminated. This
    means the output is empty and we check on empty string. This patch makes
    the test less prone to the errors coming from executed binaries.
    
    Change-Id: I22a7f2fea56c9d97a1d765f0f25e9f28c7942b55
    Closes-bug: 1659965


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1659965

Title:
  test_get_root_helper_child_pid_returns_first_child gate failure

Status in neutron:
  Fix Released

Bug description:
  http://logs.openstack.org/01/410501/5/check/gate-neutron-dsvm-
  functional-ubuntu-xenial/8a82bb0/testr_results.html.gz

  ft1.1: neutron.tests.functional.agent.linux.test_utils.TestGetRootHelperChildPid.test_get_root_helper_child_pid_returns_first_child_StringException: Empty attachments:
    stderr
    stdout

  pythonlogging:'': {{{
  DEBUG [stevedore.extension] found extension EntryPoint.parse('zmq = oslo_messaging._drivers.impl_zmq:ZmqDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('amqp = oslo_messaging._drivers.impl_amqp1:ProtonDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('pika = oslo_messaging._drivers.impl_pika:PikaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('fake = oslo_messaging._drivers.impl_fake:FakeDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kombu = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kafka = oslo_messaging._drivers.impl_kafka:KafkaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('rabbit = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('zmq = oslo_messaging._drivers.impl_zmq:ZmqDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('amqp = oslo_messaging._drivers.impl_amqp1:ProtonDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('pika = oslo_messaging._drivers.impl_pika:PikaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('fake = oslo_messaging._drivers.impl_fake:FakeDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kombu = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kafka = oslo_messaging._drivers.impl_kafka:KafkaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('rabbit = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('zmq = oslo_messaging._drivers.impl_zmq:ZmqDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('amqp = oslo_messaging._drivers.impl_amqp1:ProtonDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('pika = oslo_messaging._drivers.impl_pika:PikaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('fake = oslo_messaging._drivers.impl_fake:FakeDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kombu = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kafka = oslo_messaging._drivers.impl_kafka:KafkaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('rabbit = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('zmq = oslo_messaging._drivers.impl_zmq:ZmqDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('amqp = oslo_messaging._drivers.impl_amqp1:ProtonDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('pika = oslo_messaging._drivers.impl_pika:PikaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('fake = oslo_messaging._drivers.impl_fake:FakeDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kombu = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('kafka = oslo_messaging._drivers.impl_kafka:KafkaDriver')
     DEBUG [stevedore.extension] found extension EntryPoint.parse('rabbit = oslo_messaging._drivers.impl_rabbit:RabbitDriver')
     DEBUG [oslo_policy._cache_handler] Reloading cached file /opt/stack/new/neutron/neutron/tests/etc/policy.json
     DEBUG [oslo_policy.policy] Reloaded policy file: /opt/stack/new/neutron/neutron/tests/etc/policy.json
  }}}

  Traceback (most recent call last):
    File "neutron/tests/base.py", line 116, in func
      return f(self, *args, **kwargs)
    File "neutron/tests/functional/agent/linux/test_utils.py", line 81, in test_get_root_helper_child_pid_returns_first_child
      sleep=0.1)
    File "neutron/common/utils.py", line 736, in wait_until_true
      while not predicate():
    File "neutron/tests/functional/agent/linux/test_utils.py", line 67, in wait_for_sleep_is_spawned
      return 'sleep' == processes[-1]
  IndexError: list index out of range

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